Set the Flag to Change the System

I want to make progress! I want to study. Ding, the detection flag has been set. Congratulations on getting the Xueba system. I want to prepare delicious meals, ding, the detection flag has been set, and I have obtained the gourmet food system. I want to become stronger, ding, the detection flag has been set, and I have obtained the martial arts master system. .... One day, Liu Songyu accidentally set a flag, but suddenly found that he had obtained a system in exchange, and he was suddenly out of control. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.